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Finding the Fourth Proportional to 481,521.32, 722,111.62 and 139,893.68

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Solution

The fourth proportional to 481,521.32, 722,111.62 and 139,893.68 is: 209,791.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,521.32 : 722,111.62 = 139,893.68 : x
  2. Step 2: Convert to fraction form
    481,521.32/722,111.62 = 139,893.68/x
  3. Step 3: Cross multiply
    481,521.32x = 722,111.62 × 139,893.68
  4. Step 4: Simplify right side
    481,521.32x = 101,018,851,892.56
  5. Step 5: Solve for x
    x = 101,018,851,892.56/481,521.32
  6. Step 6: Final answer
    x = 209,791.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.